ICD-10-CM Codes
I00-I99 Diseases of the circulatory system
I10-I16 Hypertensive diseases
I16- Hypertensive crisis
2020 ICD-10-CM Diagnosis Code I16

2020 ICD-10-CM Diagnosis Code I16

Hypertensive crisis

2017 - New Code

2018

2019

2020

Non-Billable/Non-Specific Code

I16 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2020 edition of ICD-10-CM I16 became effective on October 1, 2019.
This is the American ICD-10-CM version of I16 - other international versions of ICD-10 I16 may differ.

Code Also

Code Also Help

A code also note instructs that 2 codes may be required to fully describe a condition but the sequencing of the two codes is discretionary, depending on the severity of the conditions and the reason for the encounter.

any identified hypertensive disease (
ICD-10-CM Diagnosis Code I10
Essential (primary) hypertension
Includes
- high blood pressure
- hypertension (arterial) (benign) (essential) (malignant) (primary) (systemic)
Type 1 Excludes
- hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
Type 2 Excludes
- essential (primary) hypertension involving vessels of brain (I60-I69)
- essential (primary) hypertension involving vessels of eye (H35.0-)
I10
-
ICD-10-CM Diagnosis Code I15
Secondary hypertension
Code Also
- underlying condition
Type 1 Excludes
- postprocedural hypertension (I97.3)
Type 2 Excludes
- secondary hypertension involving vessels of brain (I60-I69)
- secondary hypertension involving vessels of eye (H35.0-)
I15
)

The following code(s) above I16 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to I16:

I00-I99
2020 ICD-10-CM Range I00-I99
Diseases of the circulatory system
Type 2 Excludes
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Diseases of the circulatory system
I10-I16
2020 ICD-10-CM Range I10-I16
Hypertensive diseases
Type 1 Excludes
- neonatal hypertension (P29.2)
- primary pulmonary hypertension (I27.0)
Type 2 Excludes
- hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
Use Additional
- code to identify:
- exposure to environmental tobacco smoke (Z77.22)
- history of tobacco dependence (Z87.891)
- occupational exposure to environmental tobacco smoke (Z57.31)
- tobacco dependence (F17.-)
- tobacco use (Z72.0)
Hypertensive diseases

Code History

2017 (effective 10/1/2016): New code
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change

ICD-10-CM Codes Adjacent To I16

I13.1 Hypertensive heart and chronic kidney disease without heart failure

I13.10 …… with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease

I13.11 …… with stage 5 chronic kidney disease, or end stage renal disease

I13.2 Hypertensive heart and chronic kidney disease with heart failure and with stage 5 chronic kidney disease, or end stage renal disease

I15 Secondary hypertension

I15.0 Renovascular hypertension

I15.1 Hypertension secondary to other renal disorders

I15.2 Hypertension secondary to endocrine disorders

I15.8 Other secondary hypertension

I15.9 Secondary hypertension, unspecified

I16 Hypertensive crisis

I16.0 Hypertensive urgency

I16.1 Hypertensive emergency

I16.9 Hypertensive crisis, unspecified

I20 Angina pectoris

I20.0 Unstable angina

I20.1 Angina pectoris with documented spasm

I20.8 Other forms of angina pectoris

I20.9 Angina pectoris, unspecified

I21 Acute myocardial infarction

I21.0 ST elevation (STEMI) myocardial infarction of anterior wall

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2020 ICD-10-CM Diagnosis Code I16

Hypertensive crisis

Essential (primary) hypertension

Secondary hypertension

Diseases of the circulatory system

Hypertensive diseases